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 * Copyright (c) 1995, 2013, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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package java.awt;

import java.awt.peer.MenuItemPeer;
import java.awt.event.*;
import java.util.EventListener;
import java.io.ObjectOutputStream;
import java.io.ObjectInputStream;
import java.io.IOException;
import javax.accessibility.*;
import sun.awt.AWTAccessor;

/**
 * All items in a menu must belong to the class
 * <code>MenuItem</code>, or one of its subclasses.
 * <p>
 * The default <code>MenuItem</code> object embodies
 * a simple labeled menu item.
 * <p>
 * This picture of a menu bar shows five menu items:
 * <IMG SRC="doc-files/MenuBar-1.gif" alt="The following text describes this graphic."
 * style="float:center; margin: 7px 10px;">
 * <br style="clear:left;">
 * The first two items are simple menu items, labeled
 * <code>"Basic"</code> and <code>"Simple"</code>.
 * Following these two items is a separator, which is itself
 * a menu item, created with the label <code>"-"</code>.
 * Next is an instance of <code>CheckboxMenuItem</code>
 * labeled <code>"Check"</code>. The final menu item is a
 * submenu labeled <code>"More&nbsp;Examples"</code>,
 * and this submenu is an instance of <code>Menu</code>.
 * <p>
 * When a menu item is selected, AWT sends an action event to
 * the menu item. Since the event is an
 * instance of <code>ActionEvent</code>, the <code>processEvent</code>
 * method examines the event and passes it along to
 * <code>processActionEvent</code>. The latter method redirects the
 * event to any <code>ActionListener</code> objects that have
 * registered an interest in action events generated by this
 * menu item.
 * <P>
 * Note that the subclass <code>Menu</code> overrides this behavior and
 * does not send any event to the frame until one of its subitems is
 * selected.
 *
 * @author Sami Shaio
 */
public class MenuItem extends MenuComponent implements Accessible {

  static {
        /* ensure that the necessary native libraries are loaded */
    Toolkit.loadLibraries();
    if (!GraphicsEnvironment.isHeadless()) {
      initIDs();
    }

    AWTAccessor.setMenuItemAccessor(
        new AWTAccessor.MenuItemAccessor() {
          public boolean isEnabled(MenuItem item) {
            return item.enabled;
          }

          public String getLabel(MenuItem item) {
            return item.label;
          }

          public MenuShortcut getShortcut(MenuItem item) {
            return item.shortcut;
          }

          public String getActionCommandImpl(MenuItem item) {
            return item.getActionCommandImpl();
          }

          public boolean isItemEnabled(MenuItem item) {
            return item.isItemEnabled();
          }
        });
  }

  /**
   * A value to indicate whether a menu item is enabled
   * or not.  If it is enabled, <code>enabled</code> will
   * be set to true.  Else <code>enabled</code> will
   * be set to false.
   *
   * @serial
   * @see #isEnabled()
   * @see #setEnabled(boolean)
   */
  boolean enabled = true;

  /**
   * <code>label</code> is the label of a menu item.
   * It can be any string.
   *
   * @serial
   * @see #getLabel()
   * @see #setLabel(String)
   */
  String label;

  /**
   * This field indicates the command tha has been issued
   * by a  particular menu item.
   * By default the <code>actionCommand</code>
   * is the label of the menu item, unless it has been
   * set using setActionCommand.
   *
   * @serial
   * @see #setActionCommand(String)
   * @see #getActionCommand()
   */
  String actionCommand;

  /**
   * The eventMask is ONLY set by subclasses via enableEvents.
   * The mask should NOT be set when listeners are registered
   * so that we can distinguish the difference between when
   * listeners request events and subclasses request them.
   *
   * @serial
   */
  long eventMask;

  transient ActionListener actionListener;

  /**
   * A sequence of key stokes that ia associated with
   * a menu item.
   * Note :in 1.1.2 you must use setActionCommand()
   * on a menu item in order for its shortcut to
   * work.
   *
   * @serial
   * @see #getShortcut()
   * @see #setShortcut(MenuShortcut)
   * @see #deleteShortcut()
   */
  private MenuShortcut shortcut = null;

  private static final String base = "menuitem";
  private static int nameCounter = 0;

  /*
   * JDK 1.1 serialVersionUID
   */
  private static final long serialVersionUID = -21757335363267194L;

  /**
   * Constructs a new MenuItem with an empty label and no keyboard
   * shortcut.
   *
   * @throws HeadlessException if GraphicsEnvironment.isHeadless() returns true.
   * @see java.awt.GraphicsEnvironment#isHeadless
   * @since JDK1.1
   */
  public MenuItem() throws HeadlessException {
    this("", null);
  }

  /**
   * Constructs a new MenuItem with the specified label
   * and no keyboard shortcut. Note that use of "-" in
   * a label is reserved to indicate a separator between
   * menu items. By default, all menu items except for
   * separators are enabled.
   *
   * @param label the label for this menu item.
   * @throws HeadlessException if GraphicsEnvironment.isHeadless() returns true.
   * @see java.awt.GraphicsEnvironment#isHeadless
   * @since JDK1.0
   */
  public MenuItem(String label) throws HeadlessException {
    this(label, null);
  }

  /**
   * Create a menu item with an associated keyboard shortcut.
   * Note that use of "-" in a label is reserved to indicate
   * a separator between menu items. By default, all menu
   * items except for separators are enabled.
   *
   * @param label the label for this menu item.
   * @param s the instance of <code>MenuShortcut</code> associated with this menu item.
   * @throws HeadlessException if GraphicsEnvironment.isHeadless() returns true.
   * @see java.awt.GraphicsEnvironment#isHeadless
   * @since JDK1.1
   */
  public MenuItem(String label, MenuShortcut s) throws HeadlessException {
    this.label = label;
    this.shortcut = s;
  }

  /**
   * Construct a name for this MenuComponent.  Called by getName() when
   * the name is null.
   */
  String constructComponentName() {
    synchronized (MenuItem.class) {
      return base + nameCounter++;
    }
  }

  /**
   * Creates the menu item's peer.  The peer allows us to modify the
   * appearance of the menu item without changing its functionality.
   */
  public void addNotify() {
    synchronized (getTreeLock()) {
      if (peer == null) {
        peer = Toolkit.getDefaultToolkit().createMenuItem(this);
      }
    }
  }

  /**
   * Gets the label for this menu item.
   *
   * @return the label of this menu item, or <code>null</code> if this menu item has no label.
   * @see java.awt.MenuItem#setLabel
   * @since JDK1.0
   */
  public String getLabel() {
    return label;
  }

  /**
   * Sets the label for this menu item to the specified label.
   *
   * @param label the new label, or <code>null</code> for no label.
   * @see java.awt.MenuItem#getLabel
   * @since JDK1.0
   */
  public synchronized void setLabel(String label) {
    this.label = label;
    MenuItemPeer peer = (MenuItemPeer) this.peer;
    if (peer != null) {
      peer.setLabel(label);
    }
  }

  /**
   * Checks whether this menu item is enabled.
   *
   * @see java.awt.MenuItem#setEnabled
   * @since JDK1.0
   */
  public boolean isEnabled() {
    return enabled;
  }

  /**
   * Sets whether or not this menu item can be chosen.
   *
   * @param b if <code>true</code>, enables this menu item; if <code>false</code>, disables it.
   * @see java.awt.MenuItem#isEnabled
   * @since JDK1.1
   */
  public synchronized void setEnabled(boolean b) {
    enable(b);
  }

  /**
   * @deprecated As of JDK version 1.1, replaced by <code>setEnabled(boolean)</code>.
   */
  @Deprecated
  public synchronized void enable() {
    enabled = true;
    MenuItemPeer peer = (MenuItemPeer) this.peer;
    if (peer != null) {
      peer.setEnabled(true);
    }
  }

  /**
   * @deprecated As of JDK version 1.1, replaced by <code>setEnabled(boolean)</code>.
   */
  @Deprecated
  public void enable(boolean b) {
    if (b) {
      enable();
    } else {
      disable();
    }
  }

  /**
   * @deprecated As of JDK version 1.1, replaced by <code>setEnabled(boolean)</code>.
   */
  @Deprecated
  public synchronized void disable() {
    enabled = false;
    MenuItemPeer peer = (MenuItemPeer) this.peer;
    if (peer != null) {
      peer.setEnabled(false);
    }
  }

  /**
   * Get the <code>MenuShortcut</code> object associated with this
   * menu item,
   *
   * @return the menu shortcut associated with this menu item, or <code>null</code> if none has been
   * specified.
   * @see java.awt.MenuItem#setShortcut
   * @since JDK1.1
   */
  public MenuShortcut getShortcut() {
    return shortcut;
  }

  /**
   * Set the <code>MenuShortcut</code> object associated with this
   * menu item. If a menu shortcut is already associated with
   * this menu item, it is replaced.
   *
   * @param s the menu shortcut to associate with this menu item.
   * @see java.awt.MenuItem#getShortcut
   * @since JDK1.1
   */
  public void setShortcut(MenuShortcut s) {
    shortcut = s;
    MenuItemPeer peer = (MenuItemPeer) this.peer;
    if (peer != null) {
      peer.setLabel(label);
    }
  }

  /**
   * Delete any <code>MenuShortcut</code> object associated
   * with this menu item.
   *
   * @since JDK1.1
   */
  public void deleteShortcut() {
    shortcut = null;
    MenuItemPeer peer = (MenuItemPeer) this.peer;
    if (peer != null) {
      peer.setLabel(label);
    }
  }

  /*
   * Delete a matching MenuShortcut associated with this MenuItem.
   * Used when iterating Menus.
   */
  void deleteShortcut(MenuShortcut s) {
    if (s.equals(shortcut)) {
      shortcut = null;
      MenuItemPeer peer = (MenuItemPeer) this.peer;
      if (peer != null) {
        peer.setLabel(label);
      }
    }
  }

  /*
   * The main goal of this method is to post an appropriate event
   * to the event queue when menu shortcut is pressed. However,
   * in subclasses this method may do more than just posting
   * an event.
   */
  void doMenuEvent(long when, int modifiers) {
    Toolkit.getEventQueue().postEvent(
        new ActionEvent(this, ActionEvent.ACTION_PERFORMED,
            getActionCommand(), when, modifiers));
  }

  /*
   * Returns true if the item and all its ancestors are
   * enabled, false otherwise
   */
  private final boolean isItemEnabled() {
    // Fix For 6185151: Menu shortcuts of all menuitems within a menu
    // should be disabled when the menu itself is disabled
    if (!isEnabled()) {
      return false;
    }
    MenuContainer container = getParent_NoClientCode();
    do {
      if (!(container instanceof Menu)) {
        return true;
      }
      Menu menu = (Menu) container;
      if (!menu.isEnabled()) {
        return false;
      }
      container = menu.getParent_NoClientCode();
    } while (container != null);
    return true;
  }

  /*
   * Post an ActionEvent to the target (on
   * keydown) and the item is enabled.
   * Returns true if there is an associated shortcut.
   */
  boolean handleShortcut(KeyEvent e) {
    MenuShortcut s = new MenuShortcut(e.getKeyCode(),
        (e.getModifiers() & InputEvent.SHIFT_MASK) > 0);
    MenuShortcut sE = new MenuShortcut(e.getExtendedKeyCode(),
        (e.getModifiers() & InputEvent.SHIFT_MASK) > 0);
    // Fix For 6185151: Menu shortcuts of all menuitems within a menu
    // should be disabled when the menu itself is disabled
    if ((s.equals(shortcut) || sE.equals(shortcut)) && isItemEnabled()) {
      // MenuShortcut match -- issue an event on keydown.
      if (e.getID() == KeyEvent.KEY_PRESSED) {
        doMenuEvent(e.getWhen(), e.getModifiers());
      } else {
        // silently eat key release.
      }
      return true;
    }
    return false;
  }

  MenuItem getShortcutMenuItem(MenuShortcut s) {
    return (s.equals(shortcut)) ? this : null;
  }

  /**
   * Enables event delivery to this menu item for events
   * to be defined by the specified event mask parameter
   * <p>
   * Since event types are automatically enabled when a listener for
   * that type is added to the menu item, this method only needs
   * to be invoked by subclasses of <code>MenuItem</code> which desire to
   * have the specified event types delivered to <code>processEvent</code>
   * regardless of whether a listener is registered.
   *
   * @param eventsToEnable the event mask defining the event types
   * @see java.awt.MenuItem#processEvent
   * @see java.awt.MenuItem#disableEvents
   * @see java.awt.Component#enableEvents
   * @since JDK1.1
   */
  protected final void enableEvents(long eventsToEnable) {
    eventMask |= eventsToEnable;
    newEventsOnly = true;
  }

  /**
   * Disables event delivery to this menu item for events
   * defined by the specified event mask parameter.
   *
   * @param eventsToDisable the event mask defining the event types
   * @see java.awt.MenuItem#processEvent
   * @see java.awt.MenuItem#enableEvents
   * @see java.awt.Component#disableEvents
   * @since JDK1.1
   */
  protected final void disableEvents(long eventsToDisable) {
    eventMask &= ~eventsToDisable;
  }

  /**
   * Sets the command name of the action event that is fired
   * by this menu item.
   * <p>
   * By default, the action command is set to the label of
   * the menu item.
   *
   * @param command the action command to be set for this menu item.
   * @see java.awt.MenuItem#getActionCommand
   * @since JDK1.1
   */
  public void setActionCommand(String command) {
    actionCommand = command;
  }

  /**
   * Gets the command name of the action event that is fired
   * by this menu item.
   *
   * @see java.awt.MenuItem#setActionCommand
   * @since JDK1.1
   */
  public String getActionCommand() {
    return getActionCommandImpl();
  }

  // This is final so it can be called on the Toolkit thread.
  final String getActionCommandImpl() {
    return (actionCommand == null ? label : actionCommand);
  }

  /**
   * Adds the specified action listener to receive action events
   * from this menu item.
   * If l is null, no exception is thrown and no action is performed.
   * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
   * >AWT Threading Issues</a> for details on AWT's threading model.
   *
   * @param l the action listener.
   * @see #removeActionListener
   * @see #getActionListeners
   * @see java.awt.event.ActionEvent
   * @see java.awt.event.ActionListener
   * @since JDK1.1
   */
  public synchronized void addActionListener(ActionListener l) {
    if (l == null) {
      return;
    }
    actionListener = AWTEventMulticaster.add(actionListener, l);
    newEventsOnly = true;
  }

  /**
   * Removes the specified action listener so it no longer receives
   * action events from this menu item.
   * If l is null, no exception is thrown and no action is performed.
   * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
   * >AWT Threading Issues</a> for details on AWT's threading model.
   *
   * @param l the action listener.
   * @see #addActionListener
   * @see #getActionListeners
   * @see java.awt.event.ActionEvent
   * @see java.awt.event.ActionListener
   * @since JDK1.1
   */
  public synchronized void removeActionListener(ActionListener l) {
    if (l == null) {
      return;
    }
    actionListener = AWTEventMulticaster.remove(actionListener, l);
  }

  /**
   * Returns an array of all the action listeners
   * registered on this menu item.
   *
   * @return all of this menu item's <code>ActionListener</code>s or an empty array if no action
   * listeners are currently registered
   * @see #addActionListener
   * @see #removeActionListener
   * @see java.awt.event.ActionEvent
   * @see java.awt.event.ActionListener
   * @since 1.4
   */
  public synchronized ActionListener[] getActionListeners() {
    return getListeners(ActionListener.class);
  }

  /**
   * Returns an array of all the objects currently registered
   * as <code><em>Foo</em>Listener</code>s
   * upon this <code>MenuItem</code>.
   * <code><em>Foo</em>Listener</code>s are registered using the
   * <code>add<em>Foo</em>Listener</code> method.
   *
   * <p>
   * You can specify the <code>listenerType</code> argument
   * with a class literal, such as
   * <code><em>Foo</em>Listener.class</code>.
   * For example, you can query a
   * <code>MenuItem</code> <code>m</code>
   * for its action listeners with the following code:
   *
   * <pre>ActionListener[] als = (ActionListener[])(m.getListeners(ActionListener.class));</pre>
   *
   * If no such listeners exist, this method returns an empty array.
   *
   * @param listenerType the type of listeners requested; this parameter should specify an interface
   * that descends from <code>java.util.EventListener</code>
   * @return an array of all objects registered as <code><em>Foo</em>Listener</code>s on this menu
   * item, or an empty array if no such listeners have been added
   * @throws ClassCastException if <code>listenerType</code> doesn't specify a class or interface
   * that implements <code>java.util.EventListener</code>
   * @see #getActionListeners
   * @since 1.3
   */
  public <T extends EventListener> T[] getListeners(Class<T> listenerType) {
    EventListener l = null;
    if (listenerType == ActionListener.class) {
      l = actionListener;
    }
    return AWTEventMulticaster.getListeners(l, listenerType);
  }

  /**
   * Processes events on this menu item. If the event is an
   * instance of <code>ActionEvent</code>, it invokes
   * <code>processActionEvent</code>, another method
   * defined by <code>MenuItem</code>.
   * <p>
   * Currently, menu items only support action events.
   * <p>Note that if the event parameter is <code>null</code>
   * the behavior is unspecified and may result in an
   * exception.
   *
   * @param e the event
   * @see java.awt.MenuItem#processActionEvent
   * @since JDK1.1
   */
  protected void processEvent(AWTEvent e) {
    if (e instanceof ActionEvent) {
      processActionEvent((ActionEvent) e);
    }
  }

  // REMIND: remove when filtering is done at lower level
  boolean eventEnabled(AWTEvent e) {
    if (e.id == ActionEvent.ACTION_PERFORMED) {
      if ((eventMask & AWTEvent.ACTION_EVENT_MASK) != 0 ||
          actionListener != null) {
        return true;
      }
      return false;
    }
    return super.eventEnabled(e);
  }

  /**
   * Processes action events occurring on this menu item,
   * by dispatching them to any registered
   * <code>ActionListener</code> objects.
   * This method is not called unless action events are
   * enabled for this component. Action events are enabled
   * when one of the following occurs:
   * <ul>
   * <li>An <code>ActionListener</code> object is registered
   * via <code>addActionListener</code>.
   * <li>Action events are enabled via <code>enableEvents</code>.
   * </ul>
   * <p>Note that if the event parameter is <code>null</code>
   * the behavior is unspecified and may result in an
   * exception.
   *
   * @param e the action event
   * @see java.awt.event.ActionEvent
   * @see java.awt.event.ActionListener
   * @see java.awt.MenuItem#enableEvents
   * @since JDK1.1
   */
  protected void processActionEvent(ActionEvent e) {
    ActionListener listener = actionListener;
    if (listener != null) {
      listener.actionPerformed(e);
    }
  }

  /**
   * Returns a string representing the state of this <code>MenuItem</code>.
   * This method is intended to be used only for debugging purposes, and the
   * content and format of the returned string may vary between
   * implementations. The returned string may be empty but may not be
   * <code>null</code>.
   *
   * @return the parameter string of this menu item
   */
  public String paramString() {
    String str = ",label=" + label;
    if (shortcut != null) {
      str += ",shortcut=" + shortcut;
    }
    return super.paramString() + str;
  }


    /* Serialization support.
     */

  /**
   * Menu item serialized data version.
   *
   * @serial
   */
  private int menuItemSerializedDataVersion = 1;

  /**
   * Writes default serializable fields to stream.  Writes
   * a list of serializable <code>ActionListeners</code>
   * as optional data. The non-serializable listeners are
   * detected and no attempt is made to serialize them.
   *
   * @param s the <code>ObjectOutputStream</code> to write
   * @serialData <code>null</code> terminated sequence of 0 or more pairs; the pair consists of a
   * <code>String</code> and an <code>Object</code>; the <code>String</code> indicates the type of
   * object and is one of the following: <code>actionListenerK</code> indicating an
   * <code>ActionListener</code> object
   * @see AWTEventMulticaster#save(ObjectOutputStream, String, EventListener)
   * @see #readObject(ObjectInputStream)
   */
  private void writeObject(ObjectOutputStream s)
      throws IOException {
    s.defaultWriteObject();

    AWTEventMulticaster.save(s, actionListenerK, actionListener);
    s.writeObject(null);
  }

  /**
   * Reads the <code>ObjectInputStream</code> and if it
   * isn't <code>null</code> adds a listener to receive
   * action events fired by the <code>Menu</code> Item.
   * Unrecognized keys or values will be ignored.
   *
   * @param s the <code>ObjectInputStream</code> to read
   * @throws HeadlessException if <code>GraphicsEnvironment.isHeadless</code> returns
   * <code>true</code>
   * @see #removeActionListener(ActionListener)
   * @see #addActionListener(ActionListener)
   * @see #writeObject(ObjectOutputStream)
   */
  private void readObject(ObjectInputStream s)
      throws ClassNotFoundException, IOException, HeadlessException {
    // HeadlessException will be thrown from MenuComponent's readObject
    s.defaultReadObject();

    Object keyOrNull;
    while (null != (keyOrNull = s.readObject())) {
      String key = ((String) keyOrNull).intern();

      if (actionListenerK == key) {
        addActionListener((ActionListener) (s.readObject()));
      } else // skip value for unrecognized key
      {
        s.readObject();
      }
    }
  }

  /**
   * Initialize JNI field and method IDs
   */
  private static native void initIDs();

/////////////////
// Accessibility support
////////////////

  /**
   * Gets the AccessibleContext associated with this MenuItem.
   * For menu items, the AccessibleContext takes the form of an
   * AccessibleAWTMenuItem.
   * A new AccessibleAWTMenuItem instance is created if necessary.
   *
   * @return an AccessibleAWTMenuItem that serves as the AccessibleContext of this MenuItem
   * @since 1.3
   */
  public AccessibleContext getAccessibleContext() {
    if (accessibleContext == null) {
      accessibleContext = new AccessibleAWTMenuItem();
    }
    return accessibleContext;
  }

  /**
   * Inner class of MenuItem used to provide default support for
   * accessibility.  This class is not meant to be used directly by
   * application developers, but is instead meant only to be
   * subclassed by menu component developers.
   * <p>
   * This class implements accessibility support for the
   * <code>MenuItem</code> class.  It provides an implementation of the
   * Java Accessibility API appropriate to menu item user-interface elements.
   *
   * @since 1.3
   */
  protected class AccessibleAWTMenuItem extends AccessibleAWTMenuComponent
      implements AccessibleAction, AccessibleValue {

    /*
     * JDK 1.3 serialVersionUID
     */
    private static final long serialVersionUID = -217847831945965825L;

    /**
     * Get the accessible name of this object.
     *
     * @return the localized name of the object -- can be null if this object does not have a name
     */
    public String getAccessibleName() {
      if (accessibleName != null) {
        return accessibleName;
      } else {
        if (getLabel() == null) {
          return super.getAccessibleName();
        } else {
          return getLabel();
        }
      }
    }

    /**
     * Get the role of this object.
     *
     * @return an instance of AccessibleRole describing the role of the object
     */
    public AccessibleRole getAccessibleRole() {
      return AccessibleRole.MENU_ITEM;
    }

    /**
     * Get the AccessibleAction associated with this object.  In the
     * implementation of the Java Accessibility API for this class,
     * return this object, which is responsible for implementing the
     * AccessibleAction interface on behalf of itself.
     *
     * @return this object
     */
    public AccessibleAction getAccessibleAction() {
      return this;
    }

    /**
     * Get the AccessibleValue associated with this object.  In the
     * implementation of the Java Accessibility API for this class,
     * return this object, which is responsible for implementing the
     * AccessibleValue interface on behalf of itself.
     *
     * @return this object
     */
    public AccessibleValue getAccessibleValue() {
      return this;
    }

    /**
     * Returns the number of Actions available in this object.  The
     * default behavior of a menu item is to have one action.
     *
     * @return 1, the number of Actions in this object
     */
    public int getAccessibleActionCount() {
      return 1;
    }

    /**
     * Return a description of the specified action of the object.
     *
     * @param i zero-based index of the actions
     */
    public String getAccessibleActionDescription(int i) {
      if (i == 0) {
        // [[[PENDING:  WDW -- need to provide a localized string]]]
        return "click";
      } else {
        return null;
      }
    }

    /**
     * Perform the specified Action on the object
     *
     * @param i zero-based index of actions
     * @return true if the action was performed; otherwise false.
     */
    public boolean doAccessibleAction(int i) {
      if (i == 0) {
        // Simulate a button click
        Toolkit.getEventQueue().postEvent(
            new ActionEvent(MenuItem.this,
                ActionEvent.ACTION_PERFORMED,
                MenuItem.this.getActionCommand(),
                EventQueue.getMostRecentEventTime(),
                0));
        return true;
      } else {
        return false;
      }
    }

    /**
     * Get the value of this object as a Number.
     *
     * @return An Integer of 0 if this isn't selected or an Integer of 1 if this is selected.
     * @see javax.swing.AbstractButton#isSelected()
     */
    public Number getCurrentAccessibleValue() {
      return Integer.valueOf(0);
    }

    /**
     * Set the value of this object as a Number.
     *
     * @return True if the value was set.
     */
    public boolean setCurrentAccessibleValue(Number n) {
      return false;
    }

    /**
     * Get the minimum value of this object as a Number.
     *
     * @return An Integer of 0.
     */
    public Number getMinimumAccessibleValue() {
      return Integer.valueOf(0);
    }

    /**
     * Get the maximum value of this object as a Number.
     *
     * @return An Integer of 0.
     */
    public Number getMaximumAccessibleValue() {
      return Integer.valueOf(0);
    }

  } // class AccessibleAWTMenuItem

}
